Prairie du rocher is located in Randolph county Illinois with a geographic area of 0.6 square miles. The total population in Prairie du rocher is 441 with 48.3% male and 51.7% female. Children under age 5 represent 2.5% of the population, under age 18 equal 19.5% of the population and over age 65 is 18.4% of the population. The median household income is $50,000, per capita income is $28,305. There are a total of 206 housing units with 84.5% owner occupied. Education includes 45.6% of residents that are high school graduates and 8.7% with a bachelor's degree or higher. The average temperature in Prairie du rocher in the summer is 74 degrees, and in the winter 27 degrees.
